题目：

D�A�A-Type Emitter Featuring Benzo[c][1,2,5]thiadiazole and Polar CN Bond as Tandem Acceptor for High-Performance Near-Infrared Organic Light-Emitting Diodes

作者：

Ya-Kun Wang¹, Sheng-Fan Wu¹, Si-Hua Li¹, Yi Yuan¹, Fu-Peng Wu¹, Sarvendra Kumar¹, Zuo-Quan Jiang¹*, Man-Keung Fung,^1,2 and Liang-Sheng Liao^1,2,*

单位：

¹Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University

Suzhou 215123, P.R. China

²Institute of Organic Optoelectronics (IOO), JITRI, Wujiang, Suzhou, Jiangsu 215211, P. R. China

摘要：

Though urgently required, high performance near-infrared (NIR) emitters are still rare given the challenge of obtaining high photoluminance quantum efficiency (PLQY) at the same time ensuring NIR emission. The major issue lies in design strategy for which strong electron donating/withdrawing moieties with high PLQY should be integrated with a scrumptious way. Here, a novel D-A-A type NIR emitter comprising highly polar cyano group (C≡N) together with rigid benzo[c][1,2,5]thiadiazole (BT) as tandem acceptor and 4,4’-dimethyltriphenylamine as donor has been successfully delivered. This constructing strategy not only allows the D/A maintain its intrinsic electron-donating/electron-withdrawing characteristic, but also retains high photoluminance quantum yield (PLQY). In merits of the scrumptious design strategy and high PLQY, excellent EQE of 3.8% with peak emission at 692 nm for 15% doped device (4CzIPN as host) has been delivered. Encouragingly, impressive EQE of 3.1% with the peak emission at 708 nm was also successfully achieved. It is believed that these efficiencies are the best or among the best comparing to those of the reported NIR OLEDs with similar EL peak. Notably, efficiency roll-offs of both doped and non-doped device are also quite flat.

影响因子：

6.875

分区情况：

二区

链接：

http://onlinelibrary.wiley.com/doi/10.1002/adom.201700566/abstract.